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For the Inventor, By the Inventor

Charlevoix, MI, United States of America

Lexalite International Corporation


USPTO Granted Patents = 12

% Expired Patents = 8.3


Trademarks = 8

Forward Citations = 284

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13 inventors (with patents filed for the assignee):

goldMedal Ronald L Sitzema, Jr (5 out of 17 patents)

silverMedal Josh T Barnes (5 out of 6 patents)

bronzeMedal Thomas F Barnes (4 out of 7 patents)

4.  Dale A Troppman (3 out of 3 patents)

5.  Paul C Belding (3 out of 6 patents)

6.  Joel E Robinson (3 out of 10 patents)

7.  Gwen Barber (1 out of 1 patent)

8.  Paul D Cardwell (1 out of 1 patent)

9.  James T Hamilton (1 out of 1 patent)

10.  Earl E Smith (1 out of 1 patent)

11.  Gregg A Motter (1 out of 6 patents)

12.  Robert D Towne, Jr (1 out of 1 patent)

13.  Jocelyn T Barnes (1 out of 3 patents)


12 patents:

1. 6767106 - Edge-lit luminaire having prismatic optical control (2004-07-27),
2. 6698908 - Lighting fixture optical assembly including relector/refractor and collar for enhanced directional illumination control (2004-03-02),
3. 6575601 - Lighting fixture optical assembly including relector/refractor and shroud (2003-06-10),
4. 6550938 - Lighting fixture employing a partially reflective partially transmittive polymeric reflector (2003-04-22),
5. 5967648 - Lighting fixture including a neutral density polymeric material for (1999-10-19),
6. 5743634 - Perforated reflector for an ornamental luminaire (1998-04-28),
7. D367337 - Combined prismatic reflector and lens for a lighting fixture (1996-02-20),
8. 5481445 - Transflection reflector having controlled reflected and transmitted (1996-01-02),
9. 5444606 - Prismatic reflector and prismatic lens (1995-08-22),
10. 5143446 - Lighting fixture with an improved light transmitting film (1992-09-01),
11. 4839781 - Reflector/refractor (1989-06-13),
12. 4175661 - Stackable light refractor (1979-11-27),
Company Overview
Lexalite International Corporation, based in Charlevoix, Michigan, specializes in the development and manufacturing of advanced lighting solutions. The company is known for its innovative use of acrylic materials to create high-performance lighting products that cater to various industries, including architectural, commercial, and residential applications. With a focus on enhancing energy efficiency and design aesthetics, Lexalite continues to push the boundaries of lighting technology, contributing to sustainable practices in the field.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

12 Patents

#3 in Charlevoix, MI

#913 in Michigan

#25,557 in US

#48,163 in the World

Charlevoix, MI (US)
Charlevoix, MI, United States of America

Lexalite International Corporation

Forward Citations = 284

13 inventors:

goldMedal Ronald L Sitzema, Jr (5 out of 17 patents)

silverMedal Josh T Barnes (5 out of 6 patents)

bronzeMedal Thomas F Barnes (4 out of 7 patents)

4.  Dale A Troppman (3 out of 3 patents)

5.  Paul C Belding (3 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Lexalite International Corporation. Retrieved from https://idiyas.com/company/lexalite-international

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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